libavformat/img2.c

   1 /*
   2  * Image format
   3  * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
   4  * Copyright (c) 2004 Michael Niedermayer
   5  *
   6  * This file is part of Libav.
   7  *
   8  * Libav is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * Libav is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with Libav; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  21  */
  22
  23 #include "libavutil/intreadwrite.h"
  24 #include "libavutil/avstring.h"
  25 #include "libavutil/log.h"
  26 #include "libavutil/opt.h"
  27 #include "libavutil/pixdesc.h"
  28 #include "libavutil/parseutils.h"
  29 #include "avformat.h"
  30 #include "avio_internal.h"
  31 #include "internal.h"
  32
  33 typedef struct {
  34     const AVClass *class;  /**< Class for private options. */
  35     int img_first;
  36     int img_last;
  37     int img_number;
  38     int img_count;
  39     int is_pipe;
  40     char path[1024];
  41     char *pixel_format;     /**< Set by a private option. */
  42     char *video_size;       /**< Set by a private option. */
  43     char *framerate;        /**< Set by a private option. */
  44     int loop;
  45 } VideoData;
  46
  47 typedef struct {
  48     enum CodecID id;
  49     const char *str;
  50 } IdStrMap;
  51
  52 static const IdStrMap img_tags[] = {
  53     { CODEC_ID_MJPEG     , "jpeg"},
  54     { CODEC_ID_MJPEG     , "jpg"},
  55     { CODEC_ID_LJPEG     , "ljpg"},
  56     { CODEC_ID_PNG       , "png"},
  57     { CODEC_ID_PNG       , "mng"},
  58     { CODEC_ID_PPM       , "ppm"},
  59     { CODEC_ID_PPM       , "pnm"},
  60     { CODEC_ID_PGM       , "pgm"},
  61     { CODEC_ID_PGMYUV    , "pgmyuv"},
  62     { CODEC_ID_PBM       , "pbm"},
  63     { CODEC_ID_PAM       , "pam"},
  64     { CODEC_ID_MPEG1VIDEO, "mpg1-img"},
  65     { CODEC_ID_MPEG2VIDEO, "mpg2-img"},
  66     { CODEC_ID_MPEG4     , "mpg4-img"},
  67     { CODEC_ID_FFV1      , "ffv1-img"},
  68     { CODEC_ID_RAWVIDEO  , "y"},
  69     { CODEC_ID_BMP       , "bmp"},
  70     { CODEC_ID_GIF       , "gif"},
  71     { CODEC_ID_TARGA     , "tga"},
  72     { CODEC_ID_TIFF      , "tiff"},
  73     { CODEC_ID_TIFF      , "tif"},
  74     { CODEC_ID_SGI       , "sgi"},
  75     { CODEC_ID_PTX       , "ptx"},
  76     { CODEC_ID_PCX       , "pcx"},
  77     { CODEC_ID_SUNRAST   , "sun"},
  78     { CODEC_ID_SUNRAST   , "ras"},
  79     { CODEC_ID_SUNRAST   , "rs"},
  80     { CODEC_ID_SUNRAST   , "im1"},
  81     { CODEC_ID_SUNRAST   , "im8"},
  82     { CODEC_ID_SUNRAST   , "im24"},
  83     { CODEC_ID_SUNRAST   , "sunras"},
  84     { CODEC_ID_JPEG2000  , "jp2"},
  85     { CODEC_ID_JPEG2000  , "jpc"},
  86     { CODEC_ID_DPX       , "dpx"},
  87     { CODEC_ID_PICTOR    , "pic"},
  88     { CODEC_ID_XWD       , "xwd"},
  89     { CODEC_ID_NONE      , NULL}
  90 };
  91
  92 static const int sizes[][2] = {
  93     { 640, 480 },
  94     { 720, 480 },
  95     { 720, 576 },
  96     { 352, 288 },
  97     { 352, 240 },
  98     { 160, 128 },
  99     { 512, 384 },
 100     { 640, 352 },
 101     { 640, 240 },
 102 };
 103
 104 static int infer_size(int *width_ptr, int *height_ptr, int size)
 105 {
 106     int i;
 107
 108     for(i=0;i<FF_ARRAY_ELEMS(sizes);i++) {
 109         if ((sizes[i][0] * sizes[i][1]) == size) {
 110             *width_ptr = sizes[i][0];
 111             *height_ptr = sizes[i][1];
 112             return 0;
 113         }
 114     }
 115     return -1;
 116 }
 117 static enum CodecID av_str2id(const IdStrMap *tags, const char *str)
 118 {
 119     str= strrchr(str, '.');
 120     if(!str) return CODEC_ID_NONE;
 121     str++;
 122
 123     while (tags->id) {
 124         if (!av_strcasecmp(str, tags->str))
 125             return tags->id;
 126
 127         tags++;
 128     }
 129     return CODEC_ID_NONE;
 130 }
 131
 132 /* return -1 if no image found */
 133 static int find_image_range(int *pfirst_index, int *plast_index,
 134                             const char *path)
 135 {
 136     char buf[1024];
 137     int range, last_index, range1, first_index;
 138
 139     /* find the first image */
 140     for(first_index = 0; first_index < 5; first_index++) {
 141         if (av_get_frame_filename(buf, sizeof(buf), path, first_index) < 0){
 142             *pfirst_index =
 143             *plast_index = 1;
 144             if (avio_check(buf, AVIO_FLAG_READ) > 0)
 145                 return 0;
 146             return -1;
 147         }
 148         if (avio_check(buf, AVIO_FLAG_READ) > 0)
 149             break;
 150     }
 151     if (first_index == 5)
 152         goto fail;
 153
 154     /* find the last image */
 155     last_index = first_index;
 156     for(;;) {
 157         range = 0;
 158         for(;;) {
 159             if (!range)
 160                 range1 = 1;
 161             else
 162                 range1 = 2 * range;
 163             if (av_get_frame_filename(buf, sizeof(buf), path,
 164                                       last_index + range1) < 0)
 165                 goto fail;
 166             if (avio_check(buf, AVIO_FLAG_READ) <= 0)
 167                 break;
 168             range = range1;
 169             /* just in case... */
 170             if (range >= (1 << 30))
 171                 goto fail;
 172         }
 173         /* we are sure than image last_index + range exists */
 174         if (!range)
 175             break;
 176         last_index += range;
 177     }
 178     *pfirst_index = first_index;
 179     *plast_index = last_index;
 180     return 0;
 181  fail:
 182     return -1;
 183 }
 184
 185
 186 static int read_probe(AVProbeData *p)
 187 {
 188     if (p->filename && av_str2id(img_tags, p->filename)) {
 189         if (av_filename_number_test(p->filename))
 190             return AVPROBE_SCORE_MAX;
 191         else
 192             return AVPROBE_SCORE_MAX/2;
 193     }
 194     return 0;
 195 }
 196
 197 enum CodecID ff_guess_image2_codec(const char *filename)
 198 {
 199     return av_str2id(img_tags, filename);
 200 }
 201
 202 #if FF_API_GUESS_IMG2_CODEC
 203 enum CodecID av_guess_image2_codec(const char *filename){
 204     return av_str2id(img_tags, filename);
 205 }
 206 #endif
 207
 208 static int read_header(AVFormatContext *s1, AVFormatParameters *ap)
 209 {
 210     VideoData *s = s1->priv_data;
 211     int first_index, last_index, ret = 0;
 212     int width = 0, height = 0;
 213     AVStream *st;
 214     enum PixelFormat pix_fmt = PIX_FMT_NONE;
 215     AVRational framerate;
 216
 217     s1->ctx_flags |= AVFMTCTX_NOHEADER;
 218
 219     st = avformat_new_stream(s1, NULL);
 220     if (!st) {
 221         return AVERROR(ENOMEM);
 222     }
 223
 224     if (s->pixel_format && (pix_fmt = av_get_pix_fmt(s->pixel_format)) == PIX_FMT_NONE) {
 225         av_log(s1, AV_LOG_ERROR, "No such pixel format: %s.\n", s->pixel_format);
 226         return AVERROR(EINVAL);
 227     }
 228     if (s->video_size && (ret = av_parse_video_size(&width, &height, s->video_size)) < 0) {
 229         av_log(s, AV_LOG_ERROR, "Could not parse video size: %s.\n", s->video_size);
 230         return ret;
 231     }
 232     if ((ret = av_parse_video_rate(&framerate, s->framerate)) < 0) {
 233         av_log(s, AV_LOG_ERROR, "Could not parse framerate: %s.\n", s->framerate);
 234         return ret;
 235     }
 236
 237 #if FF_API_LOOP_INPUT
 238     if (s1->loop_input)
 239         s->loop = s1->loop_input;
 240 #endif
 241
 242     av_strlcpy(s->path, s1->filename, sizeof(s->path));
 243     s->img_number = 0;
 244     s->img_count = 0;
 245
 246     /* find format */
 247     if (s1->iformat->flags & AVFMT_NOFILE)
 248         s->is_pipe = 0;
 249     else{
 250         s->is_pipe = 1;
 251         st->need_parsing = AVSTREAM_PARSE_FULL;
 252     }
 253
 254     avpriv_set_pts_info(st, 60, framerate.den, framerate.num);
 255
 256     if (width && height) {
 257         st->codec->width  = width;
 258         st->codec->height = height;
 259     }
 260
 261     if (!s->is_pipe) {
 262         if (find_image_range(&first_index, &last_index, s->path) < 0)
 263             return AVERROR(ENOENT);
 264         s->img_first = first_index;
 265         s->img_last = last_index;
 266         s->img_number = first_index;
 267         /* compute duration */
 268         st->start_time = 0;
 269         st->duration = last_index - first_index + 1;
 270     }
 271
 272     if(s1->video_codec_id){
 273         st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
 274         st->codec->codec_id = s1->video_codec_id;
 275     }else if(s1->audio_codec_id){
 276         st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
 277         st->codec->codec_id = s1->audio_codec_id;
 278     }else{
 279         st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
 280         st->codec->codec_id = av_str2id(img_tags, s->path);
 281     }
 282     if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO && pix_fmt != PIX_FMT_NONE)
 283         st->codec->pix_fmt = pix_fmt;
 284
 285     return 0;
 286 }
 287
 288 static int read_packet(AVFormatContext *s1, AVPacket *pkt)
 289 {
 290     VideoData *s = s1->priv_data;
 291     char filename[1024];
 292     int i;
 293     int size[3]={0}, ret[3]={0};
 294     AVIOContext *f[3];
 295     AVCodecContext *codec= s1->streams[0]->codec;
 296
 297     if (!s->is_pipe) {
 298         /* loop over input */
 299         if (s->loop && s->img_number > s->img_last) {
 300             s->img_number = s->img_first;
 301         }
 302         if (s->img_number > s->img_last)
 303             return AVERROR_EOF;
 304         if (av_get_frame_filename(filename, sizeof(filename),
 305                                   s->path, s->img_number)<0 && s->img_number > 1)
 306             return AVERROR(EIO);
 307         for(i=0; i<3; i++){
 308             if (avio_open2(&f[i], filename, AVIO_FLAG_READ,
 309                            &s1->interrupt_callback, NULL) < 0) {
 310                 if(i==1)
 311                     break;
 312                 av_log(s1, AV_LOG_ERROR, "Could not open file : %s\n",filename);
 313                 return AVERROR(EIO);
 314             }
 315             size[i]= avio_size(f[i]);
 316
 317             if(codec->codec_id != CODEC_ID_RAWVIDEO)
 318                 break;
 319             filename[ strlen(filename) - 1 ]= 'U' + i;
 320         }
 321
 322         if(codec->codec_id == CODEC_ID_RAWVIDEO && !codec->width)
 323             infer_size(&codec->width, &codec->height, size[0]);
 324     } else {
 325         f[0] = s1->pb;
 326         if (f[0]->eof_reached)
 327             return AVERROR(EIO);
 328         size[0]= 4096;
 329     }
 330
 331     av_new_packet(pkt, size[0] + size[1] + size[2]);
 332     pkt->stream_index = 0;
 333     pkt->flags |= AV_PKT_FLAG_KEY;
 334
 335     pkt->size= 0;
 336     for(i=0; i<3; i++){
 337         if(size[i]){
 338             ret[i]= avio_read(f[i], pkt->data + pkt->size, size[i]);
 339             if (!s->is_pipe)
 340                 avio_close(f[i]);
 341             if(ret[i]>0)
 342                 pkt->size += ret[i];
 343         }
 344     }
 345
 346     if (ret[0] <= 0 || ret[1]<0 || ret[2]<0) {
 347         av_free_packet(pkt);
 348         return AVERROR(EIO); /* signal EOF */
 349     } else {
 350         s->img_count++;
 351         s->img_number++;
 352         return 0;
 353     }
 354 }
 355
 356 #if CONFIG_IMAGE2_MUXER || CONFIG_IMAGE2PIPE_MUXER
 357 /******************************************************/
 358 /* image output */
 359
 360 static int write_header(AVFormatContext *s)
 361 {
 362     VideoData *img = s->priv_data;
 363
 364     img->img_number = 1;
 365     av_strlcpy(img->path, s->filename, sizeof(img->path));
 366
 367     /* find format */
 368     if (s->oformat->flags & AVFMT_NOFILE)
 369         img->is_pipe = 0;
 370     else
 371         img->is_pipe = 1;
 372
 373     return 0;
 374 }
 375
 376 static int write_packet(AVFormatContext *s, AVPacket *pkt)
 377 {
 378     VideoData *img = s->priv_data;
 379     AVIOContext *pb[3];
 380     char filename[1024];
 381     AVCodecContext *codec= s->streams[ pkt->stream_index ]->codec;
 382     int i;
 383
 384     if (!img->is_pipe) {
 385         if (av_get_frame_filename(filename, sizeof(filename),
 386                                   img->path, img->img_number) < 0 && img->img_number>1) {
 387             av_log(s, AV_LOG_ERROR,
 388                    "Could not get frame filename number %d from pattern '%s'\n",
 389                    img->img_number, img->path);
 390             return AVERROR(EIO);
 391         }
 392         for(i=0; i<3; i++){
 393             if (avio_open2(&pb[i], filename, AVIO_FLAG_WRITE,
 394                            &s->interrupt_callback, NULL) < 0) {
 395                 av_log(s, AV_LOG_ERROR, "Could not open file : %s\n",filename);
 396                 return AVERROR(EIO);
 397             }
 398
 399             if(codec->codec_id != CODEC_ID_RAWVIDEO)
 400                 break;
 401             filename[ strlen(filename) - 1 ]= 'U' + i;
 402         }
 403     } else {
 404         pb[0] = s->pb;
 405     }
 406
 407     if(codec->codec_id == CODEC_ID_RAWVIDEO){
 408         int ysize = codec->width * codec->height;
 409         avio_write(pb[0], pkt->data        , ysize);
 410         avio_write(pb[1], pkt->data + ysize, (pkt->size - ysize)/2);
 411         avio_write(pb[2], pkt->data + ysize +(pkt->size - ysize)/2, (pkt->size - ysize)/2);
 412         avio_flush(pb[1]);
 413         avio_flush(pb[2]);
 414         avio_close(pb[1]);
 415         avio_close(pb[2]);
 416     }else{
 417         if(av_str2id(img_tags, s->filename) == CODEC_ID_JPEG2000){
 418             AVStream *st = s->streams[0];
 419             if(st->codec->extradata_size > 8 &&
 420                AV_RL32(st->codec->extradata+4) == MKTAG('j','p','2','h')){
 421                 if(pkt->size < 8 || AV_RL32(pkt->data+4) != MKTAG('j','p','2','c'))
 422                     goto error;
 423                 avio_wb32(pb[0], 12);
 424                 ffio_wfourcc(pb[0], "jP  ");
 425                 avio_wb32(pb[0], 0x0D0A870A); // signature
 426                 avio_wb32(pb[0], 20);
 427                 ffio_wfourcc(pb[0], "ftyp");
 428                 ffio_wfourcc(pb[0], "jp2 ");
 429                 avio_wb32(pb[0], 0);
 430                 ffio_wfourcc(pb[0], "jp2 ");
 431                 avio_write(pb[0], st->codec->extradata, st->codec->extradata_size);
 432             }else if(pkt->size < 8 ||
 433                      (!st->codec->extradata_size &&
 434                       AV_RL32(pkt->data+4) != MKTAG('j','P',' ',' '))){ // signature
 435             error:
 436                 av_log(s, AV_LOG_ERROR, "malformed JPEG 2000 codestream\n");
 437                 return -1;
 438             }
 439         }
 440         avio_write(pb[0], pkt->data, pkt->size);
 441     }
 442     avio_flush(pb[0]);
 443     if (!img->is_pipe) {
 444         avio_close(pb[0]);
 445     }
 446
 447     img->img_number++;
 448     return 0;
 449 }
 450
 451 #endif /* CONFIG_IMAGE2_MUXER || CONFIG_IMAGE2PIPE_MUXER */
 452
 453 #define OFFSET(x) offsetof(VideoData, x)
 454 #define DEC AV_OPT_FLAG_DECODING_PARAM
 455 static const AVOption options[] = {
 456     { "pixel_format", "", OFFSET(pixel_format), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
 457     { "video_size",   "", OFFSET(video_size),   AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
 458     { "framerate",    "", OFFSET(framerate),    AV_OPT_TYPE_STRING, {.str = "25"}, 0, 0, DEC },
 459     { "loop",         "", OFFSET(loop),         AV_OPT_TYPE_INT,    {.dbl = 0},    0, 1, DEC },
 460     { NULL },
 461 };
 462
 463 /* input */
 464 #if CONFIG_IMAGE2_DEMUXER
 465 static const AVClass img2_class = {
 466     .class_name = "image2 demuxer",
 467     .item_name  = av_default_item_name,
 468     .option     = options,
 469     .version    = LIBAVUTIL_VERSION_INT,
 470 };
 471 AVInputFormat ff_image2_demuxer = {
 472     .name           = "image2",
 473     .long_name      = NULL_IF_CONFIG_SMALL("image2 sequence"),
 474     .priv_data_size = sizeof(VideoData),
 475     .read_probe     = read_probe,
 476     .read_header    = read_header,
 477     .read_packet    = read_packet,
 478     .flags          = AVFMT_NOFILE,
 479     .priv_class     = &img2_class,
 480 };
 481 #endif
 482 #if CONFIG_IMAGE2PIPE_DEMUXER
 483 static const AVClass img2pipe_class = {
 484     .class_name = "image2pipe demuxer",
 485     .item_name  = av_default_item_name,
 486     .option     = options,
 487     .version    = LIBAVUTIL_VERSION_INT,
 488 };
 489 AVInputFormat ff_image2pipe_demuxer = {
 490     .name           = "image2pipe",
 491     .long_name      = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
 492     .priv_data_size = sizeof(VideoData),
 493     .read_header    = read_header,
 494     .read_packet    = read_packet,
 495     .priv_class     = &img2pipe_class,
 496 };
 497 #endif
 498
 499 /* output */
 500 #if CONFIG_IMAGE2_MUXER
 501 AVOutputFormat ff_image2_muxer = {
 502     .name           = "image2",
 503     .long_name      = NULL_IF_CONFIG_SMALL("image2 sequence"),
 504     .extensions     = "bmp,dpx,jpeg,jpg,ljpg,pam,pbm,pcx,pgm,pgmyuv,png,"
 505                       "ppm,sgi,tga,tif,tiff,jp2,xwd",
 506     .priv_data_size = sizeof(VideoData),
 507     .video_codec    = CODEC_ID_MJPEG,
 508     .write_header   = write_header,
 509     .write_packet   = write_packet,
 510     .flags          = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS | AVFMT_NOFILE
 511 };
 512 #endif
 513 #if CONFIG_IMAGE2PIPE_MUXER
 514 AVOutputFormat ff_image2pipe_muxer = {
 515     .name           = "image2pipe",
 516     .long_name      = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
 517     .priv_data_size = sizeof(VideoData),
 518     .video_codec    = CODEC_ID_MJPEG,
 519     .write_header   = write_header,
 520     .write_packet   = write_packet,
 521     .flags          = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS
 522 };
 523 #endif